Pier insert



FIG. 1 is a perspective view of the pier insert, according to the present invention, a pier into which the insert according to the present invention is illustrated in ghost lines for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a perspective view of the pier insert, according to the present invention

FIG. 3 is a side view illustrating the pier insert inside of a pier section, according to the present invention, a pier into which the insert according to the present invention is illustrated in ghost lines for illustrative purposes only and form no part of the claimed design;

FIG. 4 is a side view of the pier insert, according to the present invention;

FIG. 5 is a top view of the pier insert (inside of a pier section, which is illustrated in ghost lines for illustrative purposes only and form no part of the claimed design), according to the present invention; and,

FIG. 6 is a top view of the pier insert, according to the present invention. 

The ornamental design for a pier insert, as shown and described. 